Yeti GOBOX Collection

7MMWSM A dieing Cal?

Rooster52

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Feb 18, 2014
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I just sold my Browning stalker in 7MMWSM as it got so it was near imposible to find ammo or brass for it. To me it was a near perfect all around gun but when you can't find ammo it is not worth much.
I still own a Browning in 270WSM ,my local sports shop seems to always have ammo for it.And I have found brass at gun shows enough to keep me going.
 
Same problem I've run into with my 7mm WSM. Love the caliber but trying to find the ammo I want for it is a PITA. I'm having a custom rifle built and in an ideal world it'd be a 7mm WSM but it'll be a regular 7mm solely due to ammo availability. I don't unders why it isn't a much more common round at this point but Im not cool enough to understand why some rounds fail and other to crazy.m
 
I have tried out all the WSM and WSSM with exception of the 300 WSM. I think when it comes to a side by side comparison with their "original" caliber partner, the 270 WSM does the best as far as improved performance. The 300 WSM gives similar numbers as the 300 WM with less powder and the inferred improved accuracy of a shorter action. My favorite is the 243 WSSM, what a little screamer! Glad I have lots of brass and a rifle I am happy with because it is getting non-existant/way costly as well.

In hindsight it looks like Winchester tried the "shotgun" approach, releasing all these new calibers in a fairly short time frame, and in the end the 270 WSM and 300 WSM stuck. The .223 WSSM, 243 WSSM, 25 WSSM and 7mm WSM appear to be either already gone or on their way out.

That was a weird time. After really no mainstream new cartridges for awhile, and then Remingtons Utra Mags and Winchesters Mini Mags.....
 
I would have built a 7mm wsm if anyone but winchester made brass for it. The reviews for their brass are HORRIBLE! If you can find it...
 
My understanding is that WInchester actually copyrighted the WSM name, so anybody that wants to produce brass for that line has to pay a royalty.
 
I don't even see the need for a 270 WSM. You probably get a 130 gr bullet going 3250 maybe 3300 FPS? You can get 270 win that can send the same 130 bullet at 3200. It's not worth the premium you pay for "magnum" ammo. Also, probably harder to find.
 
I don't even see the need for a 270 WSM. You probably get a 130 gr bullet going 3250 maybe 3300 FPS? You can get 270 win that can send the same 130 bullet at 3200. It's not worth the premium you pay for "magnum" ammo. Also, probably harder to find.

??
270 WSM as a baseline is superior to both 270 Win and 270 WBY Mag, handloading only increases this difference.


http://www.browning.com/library/infonews/detail.asp?id=5

Granted these stats were produced by Browning/Winchester, but it is also backed up in every reloading manual I have seen. I don't have have any experience with the 270 WBY, but I have seen a major difference between the 270 WSM and 270 Win.

I do agree if purchasing ammo off the shelf, the difference wouldn't be worth it. But when reloading.....the extra potential proves out on the chrony
 
I just sold my Browning stalker in 7MMWSM as it got so it was near imposible to find ammo or brass for it. To me it was a near perfect all around gun but when you can't find ammo it is not worth much. .

I don't have many guns, but have 2 7wsm. Very happy and plenty of brass on hand.
 
I don't have many guns, but have 2 7wsm. Very happy and plenty of brass on hand.

hey Craig....if you find any more brass and you don't feel you need more......got a couple of us in need of some:) Found 50 the other day, guy ended up getting 157 bucks for a bag of 50, that's getting a bit absurd:)
 
I don't even see the need for a 270 WSM. You probably get a 130 gr bullet going 3250 maybe 3300 FPS? You can get 270 win that can send the same 130 bullet at 3200. It's not worth the premium you pay for "magnum" ammo. Also, probably harder to find.

There aren't many rifle/load combinations that will safely hit 3200 in a .270 Win.

I think 3100 is more realistic quote for average .270 Win performance.
 
I''m loving my new custom 7 WSM. I can find factory brass around here in both Winchester and Federal. Critter has got me reloading though so I'm basically shooting factories to get the brass for reloading. So far mine loves the 180 Bergers for way out there shots.
Like Critter said though we are always looking for more brass,powder, and bullets. :)



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There aren't many rifle/load combinations that will safely hit 3200 in a .270 Win.

I think 3100 is more realistic quote for average .270 Win performance.

^Amen^

I own both a 270 wsm and 300 wsm and like the cartridges very much. There were so many new rounds from so many different companies during that 2000-10 decade I think it still may take a while to shake out. I wouldn't pronounce it dead yet but it is crazy how some do stick better than others.

The ammo and component shortages has shaken up what gets run as well. For now anyway starting to see some of that ease up you might start to see more availability.

Nothing wrong with Winchester brass I certainly wouldn't avoid it for any reason.
 
I have fire formed some 300wsm brass to 7mm wsm using a reduced charge of
Hogdon 4895 and a 154 Hornady inter lok bullet. . It worked fine.
 
I own a 300 wizzum and love it, being the first wsm and the name 300 it had good odds of sticking around. The 270 is a popular bore dia and gave a good boost over the standard without the freebore and belt of the Weatherby. The 7 is great idea but being in the middle of the offerings and having an already great older brother in the 7 Rem Mag it never caught on. I was real close to building a 7/300 to get a longer neck.

Only downside to the wsm's is most factory rifles need a slight modification to really fine tune. A Wyatt's magazine box or equiv is your friend to get closer than a country mile to the lands which many times is needed for high b.c bullets. Also some wsm's don't feed for crud (rem 700) and take a little massaging or a trip back to the factory to do so.
 
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